CN111687376A - Bottom pouring cap structure - Google Patents
Bottom pouring cap structure Download PDFInfo
- Publication number
- CN111687376A CN111687376A CN202010604730.8A CN202010604730A CN111687376A CN 111687376 A CN111687376 A CN 111687376A CN 202010604730 A CN202010604730 A CN 202010604730A CN 111687376 A CN111687376 A CN 111687376A
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- CN
- China
- Prior art keywords
- sprue
- runner
- gate
- pouring
- cross gate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/086—Filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention relates to a bottom casting cap structure, and belongs to the technical field of casting processing production. The bottom pouring cap structure comprises a sprue, a cross gate and an inner gate, wherein the sprue is vertically connected with the middle part of the cross gate and communicated with the middle part of the cross gate, the inner gate is respectively positioned at two ends of the cross gate and communicated with the two ends of the cross gate, the diameter of the connection part of the bottom of the sprue and the cross gate is increased, and a filter disc is arranged in the connection part. The filter disc sets up in the bottom of sprue, has reduced the length of remaining material in the sprue after the casting, reduces the material waste.
Description
Technical Field
The invention relates to the technical field of casting processing production, in particular to a bottom casting cap structure.
Background
The pouring system plays a role in guiding metal liquid for casting into a casting part mould in the casting processing process, and the existing pouring system for processing small castings mainly comprises a top pouring type pouring system and a bottom pouring type pouring system. The top pouring system metal liquid can fall down quickly when entering the cavity, so that the thin-wall casting can be well filled, and the casting needing feeding can be well sequentially solidified; the method has the disadvantages that the molten metal falls from the high position of the cavity to cause the die to be easily damaged and splashed to form sand holes, iron beans and the like; when the molten metal enters the cavity, the molten metal flows unstably, and the easily oxidized metal is seriously oxidized. The bottom pouring type pouring system can ensure that metal can be stably poured into the cavity, reduces the oxidation of molten metal, has small scouring force on the cavity, and easily discharges gas and impurities in the cavity from the air holes or the risers.
Most of the existing bottom pouring type pouring systems adopt a filter disc arranged at an outer sprue of a sprue for slag blocking and filtering, and a long section of molten metal solidification section can be formed at the whole sprue after a casting is formed by the arrangement mode, so that a large amount of materials are wasted.
Disclosure of Invention
In order to solve the problems in the prior art, the invention discloses a bottom casting cap structure for saving casting materials, which sequentially comprises an outer gate, a sprue, a cross gate and an inner gate, wherein the outer gate is positioned at the top end of the sprue, the sprue is vertically connected with the middle part of the cross gate and communicated with the middle part of the cross gate, the inner gate is respectively positioned at two ends of the cross gate and communicated with the two ends of the cross gate, the diameter of the joint of the bottom of the sprue and the cross gate is increased and is larger than the caliber of the cross gate, and a filter plate is arranged in the joint. The filter plate is arranged at the bottom of the sprue, and after casting is finished, the riser forming part for feeding is only arranged on the cross runner part below the filter plate, so that the whole sprue is not required to be filled with casting materials, the waste of the casting materials is reduced, and the manufacturing cost of castings is greatly reduced.
Furthermore, the cross section of the horizontal runner is trapezoidal, the parts of the horizontal runner at the two sides of the straight runner are respectively bent upwards at the respective middle parts, the horizontal runners at the two sides are respectively divided into a front section and a rear section, and the rear section is connected with the inner runner near the end part. The bending part ensures that the pouring liquid fully filled in the transverse pouring gate enters the inner pouring gate and plays a further slag blocking role.
Furthermore, the cross section of the ingate is in a flat trapezoid shape, a triangular shape or a crescent shape, and the caliber of the ingate is smaller than that of the cross gate.
Furthermore, a funnel-shaped pouring cup is arranged at the outer pouring gate. The pouring of the casting metal liquid into the sprue is facilitated.
Furthermore, the rear sections of the two side parts of the straight pouring channel of the cross pouring channel are respectively wrapped with a heat tracing device. The solidification speed of the casting molten metal in the cross gate is ensured to be slower than that of the casting so as to carry out feeding.
Compared with the prior art, the bottom pouring cap structure designed by the invention has the advantages that the filter plate is arranged at the bottom of the sprue, so that the using amount of casting materials in the sprue is reduced, the waste of the casting materials of the molding part of the riser after condensation is effectively reduced, and the production cost is reduced; meanwhile, the calibers of the sprue, the cross runner and the ingate are gradually reduced, so that the casting liquid in the ingate is ensured to be fully injected into the casting mould; in addition, the back section of the horizontal pouring channel is provided with a heat tracing device, so that the solidification speed of casting liquid in the horizontal pouring channel is reduced, and the full feeding of the casting is ensured.
Drawings
FIG. 1 is a cross-sectional view of a bottom-pour cap construction
FIG. 2 is a top view of a bottom-cast cap structure
In the figure, 1 outer gate, 2 sprue, 3 runner, 4 inner runner, 5 filter, 31 front section, 32 rear section.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments. The technical solutions in the embodiments of the present invention are clearly and completely described, and the described embodiments are only some embodiments, but not all embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the present invention discloses an embodiment of a bottom-pour cap structure, in which the bottom-pour cap structure includes an outer gate 1, a sprue 2, a runner 3, and an inner runner 4, which are sequentially arranged. The outer pouring gate 1 is positioned at the top end of the straight pouring gate 2 and is provided with a funnel-shaped pouring cup. The bottom of the sprue 2 is communicated with the middle part of the cross gate 3, and the ingate 4 is arranged at two ends of the cross gate 3.
The diameter of the connecting portion of the bottom of the sprue 2 and the runner 3 is increased and is larger than the caliber of the runner 3, and the filter 5 is connected to the bottom of the sprue 2 in a clamping manner.
The horizontal runner 3 is divided into a left section and a right section by the sprue 2, the middle parts of the two sections are respectively bent upwards, the left section and the right section are respectively divided into a front section 31 close to the sprue 2 and a rear end 32 far away from the sprue 2 by the bent part, the front section 31 and the rear section 32 are both positioned in a horizontal straight path, the cross section of the horizontal straight path is trapezoidal, and the horizontal straight path is larger than the caliber of the ingate 4.
The back sections of the left and right sections of the horizontal pouring gate 3 are respectively connected with the inner pouring gate 4, and the outside of the horizontal pouring gate is integrally wrapped with a heat tracing device to slow down the solidification speed of the cast molten metal.
During pouring, molten metal is introduced from the outer pouring gate, the sprue, the front section of the cross gate and the ingate are filled with the molten metal firstly, and then the molten metal enters the cavity and can effectively block the slag from entering through the filter disc and the cross gate. After the sprue is filled with the molten metal, the jet impact force of the molten metal is reduced, and the molten metal entering the cavity is poured in a rain-free manner and mainly takes laminar flow, so that the molten metal is stably, quickly and continuously injected into the cavity. In the process of filling the mold, the molten metal is not easy to splash, and the air is not easy to be sucked in the full state of the pouring system. And the air in the cavity can be exhausted through the upper exhaust hole or the exhaust riser, so that air holes are not easy to generate. As the molten metal is filled from bottom to top and finally reaches the riser, the whole solidification sequence is fully considered when the riser is designed, and the defects of insufficient pouring, shrinkage cavity and the like are prevented.
Meanwhile, the bottom pouring cap structure is adopted, so that the application range of the casting is as follows: the wall thickness of the casting is more than 20mm, and the external dimension is more than 200mmX200 mm; when the mould is molded, a sprue box needs to be designed independently, molten metal is led to the lower part of a casting mould, and in order to prevent the fire of the casting mould, the sand-eating quantity of the side edge needs to be increased or the strength of the embedded steel bar is increased; an exhaust riser or an exhaust passage is designed to ensure smooth exhaust; setting a pouring basin to prevent the molding sand from being directly washed by the molten metal; the position of the ingate is arranged, and the thickness of the ingate is reduced under the condition that the ingate is smoothly and stably guided into the cavity just after sleeping, so that the contact thermal node is prevented from being generated.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, which is defined by the appended claims and the description of the invention.
Claims (5)
1. The utility model provides a structure is emitted in end notes pouring, its characterized in that, the structure is emitted in end notes pouring includes outer runner, sprue, cross gate and ingate in proper order, outer runner is located the top of sprue, the middle part of sprue vertical connection cross gate and intercommunication with it, the ingate is located the both ends of cross gate respectively and communicates with it, the bottom of sprue and the junction diameter grow of cross gate to be greater than the bore of cross gate, wherein be provided with the cassette.
2. The bottom pour cap structure according to claim 1, wherein the cross-section of the horizontal runner is trapezoidal, and portions of the horizontal runner at both sides of the straight runner are respectively bent upward at respective middle portions to divide the horizontal runner at both sides into a front section and a rear section, and the rear section is connected to the inner runner near an end portion.
3. The bottom pour cap structure of claim 2, wherein the cross section of the ingate is in the shape of a flat trapezoid, a triangle or a crescent, and the caliber of the ingate is smaller than that of the cross gate.
4. The bottom pour cap structure of claim 3, wherein a funnel-shaped pouring cup is provided at the outer pouring gate.
5. The bottom pour cap structure according to claim 4, wherein the runner is wrapped with heat tracing means at rear sections of both side portions of the sprue, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010604730.8A CN111687376A (en) | 2020-06-29 | 2020-06-29 | Bottom pouring cap structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010604730.8A CN111687376A (en) | 2020-06-29 | 2020-06-29 | Bottom pouring cap structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111687376A true CN111687376A (en) | 2020-09-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010604730.8A Pending CN111687376A (en) | 2020-06-29 | 2020-06-29 | Bottom pouring cap structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111687376A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226650A (en) * | 2021-11-18 | 2022-03-25 | 宁波金汇精密铸造有限公司 | Bottom pouring type casting device, bottom pouring type casting method and guide block |
| CN115415482A (en) * | 2022-08-08 | 2022-12-02 | 沈阳铸研科技有限公司 | Aluminum alloy bottom pouring type pouring system |
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2020
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226650A (en) * | 2021-11-18 | 2022-03-25 | 宁波金汇精密铸造有限公司 | Bottom pouring type casting device, bottom pouring type casting method and guide block |
| CN114226650B (en) * | 2021-11-18 | 2024-01-23 | 宁波金汇精密铸造有限公司 | Bottom pouring type casting device and bottom pouring type casting method |
| CN115415482A (en) * | 2022-08-08 | 2022-12-02 | 沈阳铸研科技有限公司 | Aluminum alloy bottom pouring type pouring system |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200922 |
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| RJ01 | Rejection of invention patent application after publication |